When your eyes are in a dark room, they get used to the darkness. But when you walk outside into bright light, your eyes have to change quickly so you can see clearly again. Your pupils, which are like tiny doors inside your eyes, shrink to let less light come in. This helps protect your eyes from getting too bright and keeps everything clear.
Examples
- When you walk outside from a dark room, your eyes shrink to let less light in so you can see better.
- Your pupils are like adjustable doors that open wide in the dark but narrow down when it's bright.
- Squinting is your body’s way of telling your eyes they need help blocking out too much light.
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See also
- How Do Our Eyes See in the Dark?
- How Do ‘Lenses’ in the Eye Work to Help Us See?
- How Does the ‘Human Eye’ See in 3D?
- How Do Lenses Work in the Human Eye?
- How Do Eyes See in Different Light Conditions?
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